MR脂肪抑制技术开发与临床应用

目的：通过ＭＲ脂肪抑制技术开发的结果，鉴别Ｔ_１加权像高信号病变。方法：利用荷兰ＰＨＩＬＩＰＳ０．５Ｔ磁共振机对３例对照组和６例病变组进行常规ＭＲ扫描和脂肪抑制（ＳＴＩＲ）扫描。结果：３例对照组的岩尖脂肪、枕项皮下脂肪。肾周脂肪常规扫描，Ｔ１Ｗ和Ｔ２Ｗ均为相似的高信号，脂肪抑制扫描无信号。病变组６例，即头部３例，颈椎及胸椎各１例，颈髓１例，常规扫描Ｔ_１Ｗ及Ｔ_２Ｗ均为高信号，脂肪抑制扫描则无信号。结论：Ｔ_１Ｗ为高信号时进行脂肪抑制扫描，脂肪受到抑制后出现特异性的无信号，可用来鉴别Ｔ_１Ｗ高信号病变。

MRI fatness auppression experiment and clinical application

Purpose: Differentiate the pathologicalchange ofhigh signal T1WI by the sesults of MRI fatness suppression experiment.Methods: 3 control subjects and 6 subjects withpathological process were scanned by routine MRI andfatness suppression on Holland PHILIPS 0.5T MRImachine. Results: By the routine scanning of petrosa fatty, T1W and T2W on subepidermic fatty of ociput and nape and internephric fatty were both highsignal, while they had no signal by using fatness suppression scanning of 6 subjects with pathologicalchange, that is, 3 were head, 1 was cervical vertebra, 1 was dorsal vertebra and 1was cervical medulla, T1W and T2W were both high signal by routinescanning bile they had no signal by fatty suppressionscanning. Conclusion: fatten suppression scanningcan be used when T1W was hight signal, there wouldbe specific no signal after the suppression of fatten,which can be useed to differentiate the pathologicalchange of high signal.